Ingredients
Equipment
Method
Prep the pan
- Line an 8x8 pan with parchment and butter generously so the fudge releases cleanly after chilling.
Cook to soft-ball stage
- Combine granulated sugar, unsalted butter, heavy cream, light corn syrup, and sweetened condensed milk in a heavy-bottomed saucepan and stir to mix evenly.
- Bring the mixture to a boil over medium heat while stirring constantly so it doesn’t scorch.
- Continue cooking, stirring frequently, until the candy thermometer reads 238-240F (soft ball stage) for a smooth caramel set.
Finish and chill
- Remove from heat and stir in vanilla and salt until fully incorporated.
- Pour the hot fudge into the prepared pan and immediately sprinkle flaky sea salt over the top.
- Cool at room temperature for 1 hour to begin setting before refrigeration.
- Refrigerate for 1 more hour until firm and set, then cut into squares with a sharp knife.
Notes
Pro tip: keep the mixture at a steady medium boil and stir frequently to reach 238–240°F without graininess. Refrigerate covered up to 7 days. Freeze up to 2 months in an airtight container (thaw in the fridge overnight). For a slightly lighter option, use half the butter portion with an equal amount of reduced-fat spread, noting the texture may be softer.
